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Injury reports on Nats’ DeRosa, Lidge

Nationals infielder/outfielder Mark DeRosa had an MRI on Monday and it revealed a left oblique strain, which landed him on the disabled list Sunday. DeRosa said he cannot do any baseball activities for 10 days to two weeks.

DeRosa started feeling the pain Saturday while he was doing his outfield drills. DeRosa, 37, didn’t think anything of it, but the injury became worse after he took batting practice.

Reliever Brad Lidge had hernia surgery Tuesday and is expected to miss four to six weeks of action. Lidge started to feel pain while having a bullpen session Wednesday in San Diego. On Monday, Lidge went to Philadelphia to get further tests.

With Lidge out of action, it means that right-hander Henry Rodriguez will be the closer. Lidge and Rodriguez were splitting the role before Lidge was put on the disabled list.

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